
ECO-TRIGO-SEM 3
Authored by Lourdes Ventura
Mathematics
1st Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
La Tierra gira sobre su eje una vez cada 24 h. ¿Cuánto tarda en girar un ángulo de 240°?
12 h
14 h
15 h
16 h
17 h
2.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Una barra metálica descansa sobre una pared lisa, tal como se muestra en la figura.
Calcule el producto del coseno y la tangente de α
2/3
3/2
5/4
4/3
3/4
3.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
David compró un terreno en forma de rectángulo, tal como muestra la figura. Calcule el perímetro de dicho terreno
56 m
78 m
80 m
86 m
94 m
4.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
El profesor de trigonometría trazó una diagonal en la pizarra, tal como se muestra en la figura
¿Cuál es el perímetro del triángulo sombreado?
4,8(1 + tanβ)
4,8(1 + cotβ)
4,8(1 + secβ)
4,8(1 + cscβ)
4,8(1 + senβ)
5.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Un profesor observa la cabeza de un alumno de 0,8 m de estatura con un ángulo de depresión de 45°.
¿Cuál es la estatura del profesor, si el alumno está a 1,2 m de él?
1,6 m
1,8 m
2 m
2,2 m
1,5 m
6.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Un grupo de personas de una embarcación ubicado en el punto B, es rescatado por un helicóptero ubicado el punto A, con los datos de la figura, halle la distancia entre el helicóptero y la embarcación
13 km
12 km
17 km
15 km
20 km
7.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
La cantidad de entradas vendidas al Parque de las Aguas está determinada por C en cientos de personas. Calcule lo recaudado en soles, si cada entrada costó 2 soles. Sabiendo que: tanx + cotx = 4.
2000 soles
2400 soles
2800 soles
3200 soles
3400 soles
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